package com.eos.common.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

/**
 * 
 * 
 * @author Administrator
 * 
 */
public class ForceNoCacheFilter implements Filter {

	public void destroy() {

	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain filterChain) throws IOException, ServletException {
		((HttpServletResponse) response).setHeader("Cache-Control", "no-cache");
		((HttpServletResponse) response).setHeader("Pragma", "no-cache");
		((HttpServletResponse) response).setDateHeader("Expires", -1);
		filterChain.doFilter(request, response);

	}

	public void init(FilterConfig arg0) throws ServletException {

	}

}
